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Meeting MS&T25: Materials Science & Technology
Symposium Advanced Coatings for Wear and Corrosion Protection
Presentation Title Effect of chromium content on intermetallic growth and heat resistance in hot-dip aluminized ferritic stainless steels
Author(s) Euijin Jung, Jihun Choi, Daeyoon Kim, Jooyoul Huh
On-Site Speaker (Planned) Euijin Jung
Abstract Scope Hot-dip aluminized coatings are widely applied to steels for high-temperature use due to their excellent corrosion and heat resistance. This study investigates the effects of chromium (Cr) content in steel on heat resistance and the growth of intermetallic compound (IMC) layers during heat treatments of aluminized ferritic stainless steels in air. Low-carbon steel and two ferritic stainless steels (containing 11.0 and 17.5 wt% Cr) were hot-dip coated with an Al-9 wt% Si alloy and exposed to air at 450 ℃, 500 ℃, and 550℃ for up to 200 h. Without Cr, the η-Fe2Al5 layer rapidly formed at the τ5(H)-Al8Fe2Si/steel interface and grew to become the dominant IMC layer. In contrast, increasing Cr content suppressed η-Fe2Al5 formation at the τ5(C)-Al8(Fe,Cr)2Si/steel interface, leading to enhanced heat resistance. This presentation will discuss the effect of Cr content on coating surface discoloration and IMC growth kinetics, supported by SEM and EBSD microstructural analysis.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Anti-erosion coatings of silicon carbide and tantalum carbonitride nanocomposite by chemical vapor deposition
Cold-sprayed and arc-melted high-entropy alloys: wear, erosion and oxidation
Effect of chromium content on intermetallic growth and heat resistance in hot-dip aluminized ferritic stainless steels
Effects of Cu, Sn, and Mn additions on intermetallic layer growth in hot-dip aluminizing with Al-9Si bath
Enhanced wear resistance of AS41 magnesium alloy via plasma electrolytic oxidation
Enhancing Tribological and Corrosive Properties of AM60 and AZ91 Magnesium Alloys via PEO Surface Modification
Evolution of mechanical properties of PEO coated Mg rods.
Laser Cladding of CoCrCuFeNi and CoCrFeNi High-Entropy Alloys on DMR 249A Steel: Corrosion and Wear behavior
Modern corrosion and wear-resistant coatings obtained using FA-charges operating in aggressive conditions of industrial production
NbC Reinforced Ni Based Alloy Cladding by Thermal Spray Coatings and Weld Overlay Technique
Open-Air Plasma Assisted Organosilicon Coating on Automotive Aluminum Alloys for Corrosion Protection
Oxide thin films obtained by reactive sputtering for antifouling purposes
Tailored DLC Coating for Regolith Dust Mitigation
Tribocorrosion Performance of TiAlN and AlTiN Coatings on Ti6Al4V Alloy for Biomedical Applications
Understanding the role of particle size on thin coating formation and mechanical properties of WC-Co-Cr coatings deposited by HVAF spray

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